diff --git a/src/main/java/forestry/apiculture/gui/ContainerImprinter.java b/src/main/java/forestry/apiculture/gui/ContainerImprinter.java
index bb6ec36b6..18574653b 100755
--- a/src/main/java/forestry/apiculture/gui/ContainerImprinter.java
+++ b/src/main/java/forestry/apiculture/gui/ContainerImprinter.java
@@ -41,7 +41,7 @@ public class ContainerImprinter extends ContainerItemInventory<ImprinterInventor
 	@Override
 	public void onContainerClosed(EntityPlayer entityplayer) {
 
-		if (!Proxies.common.isSimulating(entityplayer.worldObj)) {
+		if (entityplayer.worldObj.isRemote) {
 			return;
 		}
 
@@ -66,7 +66,7 @@ public class ContainerImprinter extends ContainerItemInventory<ImprinterInventor
 	}
 
 	public void updateContainer(World world) {
-		if (!isNetSynced && !Proxies.common.isSimulating(world)) {
+		if (!isNetSynced && world.isRemote) {
 			isNetSynced = true;
 			Proxies.net.sendToServer(new ForestryPacket(PacketId.IMPRINT_SELECTION_GET));
 		}
diff --git a/src/main/java/forestry/apiculture/items/ItemBeealyzer.java b/src/main/java/forestry/apiculture/items/ItemBeealyzer.java
index de1978dbb..3cd4680f1 100755
--- a/src/main/java/forestry/apiculture/items/ItemBeealyzer.java
+++ b/src/main/java/forestry/apiculture/items/ItemBeealyzer.java
@@ -23,7 +23,6 @@ import forestry.core.config.Config;
 import forestry.core.gui.IHintSource;
 import forestry.core.items.ItemAlyzer;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 
 public class ItemBeealyzer extends ItemAlyzer {
 
@@ -35,7 +34,7 @@ public class ItemBeealyzer extends ItemAlyzer {
 
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			entityplayer.openGui(ForestryAPI.instance, GuiId.BeealyzerGUI.ordinal(), world, (int) entityplayer.posX, (int) entityplayer.posY, (int) entityplayer.posZ);
 		}
 
diff --git a/src/main/java/forestry/apiculture/items/ItemHabitatLocator.java b/src/main/java/forestry/apiculture/items/ItemHabitatLocator.java
index d75c174bd..e8e21be9c 100644
--- a/src/main/java/forestry/apiculture/items/ItemHabitatLocator.java
+++ b/src/main/java/forestry/apiculture/items/ItemHabitatLocator.java
@@ -74,7 +74,7 @@ public class ItemHabitatLocator extends ItemInventoried {
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
 
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			entityplayer.openGui(ForestryAPI.instance, GuiId.HabitatLocatorGUI.ordinal(), world, (int) entityplayer.posX, (int) entityplayer.posY, (int) entityplayer.posZ);
 		}
 
@@ -124,7 +124,7 @@ public class ItemHabitatLocator extends ItemInventoried {
 	@Override
 	public void onUpdate(ItemStack p_77663_1_, World world, Entity player, int p_77663_4_, boolean p_77663_5_) {
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/apiculture/items/ItemImprinter.java b/src/main/java/forestry/apiculture/items/ItemImprinter.java
index e2c07f804..7fd4ac30f 100755
--- a/src/main/java/forestry/apiculture/items/ItemImprinter.java
+++ b/src/main/java/forestry/apiculture/items/ItemImprinter.java
@@ -24,7 +24,6 @@ import forestry.apiculture.genetics.Bee;
 import forestry.core.inventory.ItemInventory;
 import forestry.core.items.ItemForestry;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 
 public class ItemImprinter extends ItemForestry {
 
@@ -152,7 +151,7 @@ public class ItemImprinter extends ItemForestry {
 
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			entityplayer.openGui(ForestryAPI.instance, GuiId.ImprinterGUI.ordinal(), world, (int) entityplayer.posX, (int) entityplayer.posY,
 					(int) entityplayer.posZ);
 		}
diff --git a/src/main/java/forestry/arboriculture/blocks/BlockForestryLeaves.java b/src/main/java/forestry/arboriculture/blocks/BlockForestryLeaves.java
index 0016f79c5..b8513d886 100644
--- a/src/main/java/forestry/arboriculture/blocks/BlockForestryLeaves.java
+++ b/src/main/java/forestry/arboriculture/blocks/BlockForestryLeaves.java
@@ -115,7 +115,7 @@ public class BlockForestryLeaves extends BlockNewLeaf implements ITileEntityProv
 		int fortune = EnchantmentHelper.getFortuneModifier(player);
 		float saplingModifier = 1.0f;
 
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			ItemStack held = player.inventory.getCurrentItem();
 			if (held != null && held.getItem() instanceof IToolGrafter) {
 				saplingModifier = ((IToolGrafter) held.getItem()).getSaplingModifier(held, world, player, x, y, z);
diff --git a/src/main/java/forestry/arboriculture/blocks/BlockFruitPod.java b/src/main/java/forestry/arboriculture/blocks/BlockFruitPod.java
index ad7e7cfa0..2bc13bb4d 100644
--- a/src/main/java/forestry/arboriculture/blocks/BlockFruitPod.java
+++ b/src/main/java/forestry/arboriculture/blocks/BlockFruitPod.java
@@ -27,7 +27,6 @@ import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 
 import forestry.arboriculture.tiles.TileFruitPod;
-import forestry.core.proxy.Proxies;
 import forestry.core.render.TextureManager;
 import forestry.core.utils.BlockUtil;
 import forestry.core.utils.ItemStackUtil;
@@ -67,7 +66,7 @@ public class BlockFruitPod extends BlockCocoa {
 
 	@Override
 	public boolean removedByPlayer(World world, EntityPlayer player, int x, int y, int z) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			TileFruitPod tile = getPodTile(world, x, y, z);
 			if (tile != null) {
 				for (ItemStack drop : tile.getDrop()) {
diff --git a/src/main/java/forestry/arboriculture/blocks/BlockSapling.java b/src/main/java/forestry/arboriculture/blocks/BlockSapling.java
index a9d4273b3..962c30be5 100644
--- a/src/main/java/forestry/arboriculture/blocks/BlockSapling.java
+++ b/src/main/java/forestry/arboriculture/blocks/BlockSapling.java
@@ -36,7 +36,6 @@ import forestry.api.arboriculture.TreeManager;
 import forestry.api.genetics.AlleleManager;
 import forestry.api.genetics.IAllele;
 import forestry.arboriculture.tiles.TileSapling;
-import forestry.core.proxy.Proxies;
 import forestry.core.render.TextureManager;
 import forestry.core.tiles.TileUtil;
 import forestry.core.utils.ItemStackUtil;
@@ -141,7 +140,7 @@ public class BlockSapling extends BlockTreeContainer implements IGrowable {
 	@Override
 	public void onNeighborBlockChange(World world, int x, int y, int z, Block neighbour) {
 		super.onNeighborBlockChange(world, x, y, z, neighbour);
-		if (Proxies.common.isSimulating(world) && !this.canBlockStay(world, x, y, z)) {
+		if (!world.isRemote && !this.canBlockStay(world, x, y, z)) {
 			dropAsSapling(world, x, y, z);
 			world.setBlockToAir(x, y, z);
 		}
@@ -165,7 +164,7 @@ public class BlockSapling extends BlockTreeContainer implements IGrowable {
 
 	@Override
 	public boolean removedByPlayer(World world, EntityPlayer player, int x, int y, int z) {
-		if (Proxies.common.isSimulating(world) && canHarvestBlock(player, world.getBlockMetadata(x, y, z))) {
+		if (!world.isRemote && canHarvestBlock(player, world.getBlockMetadata(x, y, z))) {
 			if (!player.capabilities.isCreativeMode) {
 				dropAsSapling(world, x, y, z);
 			}
@@ -175,7 +174,7 @@ public class BlockSapling extends BlockTreeContainer implements IGrowable {
 	}
 
 	private static void dropAsSapling(World world, int x, int y, int z) {
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/arboriculture/items/ItemTreealyzer.java b/src/main/java/forestry/arboriculture/items/ItemTreealyzer.java
index 10e785a0b..1b9aefe35 100755
--- a/src/main/java/forestry/arboriculture/items/ItemTreealyzer.java
+++ b/src/main/java/forestry/arboriculture/items/ItemTreealyzer.java
@@ -23,7 +23,6 @@ import forestry.core.config.Config;
 import forestry.core.gui.IHintSource;
 import forestry.core.items.ItemAlyzer;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 import forestry.core.utils.GeneticsUtil;
 
 public class ItemTreealyzer extends ItemAlyzer {
@@ -36,7 +35,7 @@ public class ItemTreealyzer extends ItemAlyzer {
 
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			entityplayer.openGui(ForestryAPI.instance, GuiId.TreealyzerGUI.ordinal(), world, (int) entityplayer.posX, (int) entityplayer.posY,
 					(int) entityplayer.posZ);
 		}
diff --git a/src/main/java/forestry/arboriculture/tiles/TileWood.java b/src/main/java/forestry/arboriculture/tiles/TileWood.java
index cfc33c711..1d66bee98 100644
--- a/src/main/java/forestry/arboriculture/tiles/TileWood.java
+++ b/src/main/java/forestry/arboriculture/tiles/TileWood.java
@@ -26,7 +26,6 @@ import forestry.core.network.DataInputStreamForestry;
 import forestry.core.network.DataOutputStreamForestry;
 import forestry.core.network.IStreamable;
 import forestry.core.network.PacketTileStream;
-import forestry.core.proxy.Proxies;
 import forestry.core.utils.ItemStackUtil;
 
 public class TileWood extends TileEntity implements IStreamable {
@@ -87,7 +86,7 @@ public class TileWood extends TileEntity implements IStreamable {
 
 	public static <T extends Block & IWoodTyped> boolean blockRemovedByPlayer(T block, World world, EntityPlayer player, int x, int y, int z) {
 		int meta = world.getBlockMetadata(x, y, z);
-		if (Proxies.common.isSimulating(world) && block.canHarvestBlock(player, meta) && !player.capabilities.isCreativeMode) {
+		if (!world.isRemote && block.canHarvestBlock(player, meta) && !player.capabilities.isCreativeMode) {
 
 			TileEntity tile = world.getTileEntity(x, y, z);
 			if (tile instanceof TileWood) {
diff --git a/src/main/java/forestry/core/blocks/BlockBase.java b/src/main/java/forestry/core/blocks/BlockBase.java
index 76c48e3af..92e397407 100644
--- a/src/main/java/forestry/core/blocks/BlockBase.java
+++ b/src/main/java/forestry/core/blocks/BlockBase.java
@@ -204,7 +204,7 @@ public class BlockBase extends BlockForestry {
 			}
 		}
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return true;
 		}
 
@@ -224,7 +224,7 @@ public class BlockBase extends BlockForestry {
 	@Override
 	public void breakBlock(World world, int x, int y, int z, Block block, int meta) {
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/core/blocks/BlockForestry.java b/src/main/java/forestry/core/blocks/BlockForestry.java
index 9a45d1edd..da81f2bd4 100644
--- a/src/main/java/forestry/core/blocks/BlockForestry.java
+++ b/src/main/java/forestry/core/blocks/BlockForestry.java
@@ -25,7 +25,6 @@ import com.mojang.authlib.GameProfile;
 
 import forestry.core.CreativeTabForestry;
 import forestry.core.access.IOwnable;
-import forestry.core.proxy.Proxies;
 import forestry.core.tiles.IRestrictedAccessTile;
 import forestry.core.tiles.TileForestry;
 import forestry.core.utils.Log;
@@ -55,7 +54,7 @@ public abstract class BlockForestry extends BlockContainer {
 	@Override
 	public void onBlockPlacedBy(World world, int i, int j, int k, EntityLivingBase entityLiving, ItemStack itemstack) {
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/core/blocks/BlockSoil.java b/src/main/java/forestry/core/blocks/BlockSoil.java
index dff79cb70..1eb1b2d75 100644
--- a/src/main/java/forestry/core/blocks/BlockSoil.java
+++ b/src/main/java/forestry/core/blocks/BlockSoil.java
@@ -36,7 +36,6 @@ import forestry.core.CreativeTabForestry;
 import forestry.core.config.Constants;
 import forestry.core.config.ForestryBlock;
 import forestry.core.config.ForestryItem;
-import forestry.core.proxy.Proxies;
 import forestry.core.render.TextureManager;
 
 /**
@@ -88,7 +87,7 @@ public class BlockSoil extends Block implements IItemTyped {
 
 	@Override
 	public void updateTick(World world, int i, int j, int k, Random random) {
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/core/blocks/BlockStructure.java b/src/main/java/forestry/core/blocks/BlockStructure.java
index 2f9245424..bdfc71df0 100644
--- a/src/main/java/forestry/core/blocks/BlockStructure.java
+++ b/src/main/java/forestry/core/blocks/BlockStructure.java
@@ -21,7 +21,6 @@ import net.minecraft.world.World;
 import forestry.core.circuits.ISocketable;
 import forestry.core.multiblock.MultiblockControllerBase;
 import forestry.core.multiblock.MultiblockTileEntityBase;
-import forestry.core.proxy.Proxies;
 import forestry.core.utils.InventoryUtil;
 
 public abstract class BlockStructure extends BlockForestry {
@@ -88,7 +87,7 @@ public abstract class BlockStructure extends BlockForestry {
 	@Override
 	public void breakBlock(World world, int x, int y, int z, Block block, int meta) {
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/core/circuits/ItemSolderingIron.java b/src/main/java/forestry/core/circuits/ItemSolderingIron.java
index 471b1d8f6..f886043a7 100755
--- a/src/main/java/forestry/core/circuits/ItemSolderingIron.java
+++ b/src/main/java/forestry/core/circuits/ItemSolderingIron.java
@@ -31,7 +31,6 @@ import forestry.core.errors.EnumErrorCode;
 import forestry.core.inventory.ItemInventory;
 import forestry.core.items.ItemForestry;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 import forestry.core.utils.datastructures.RevolvingList;
 
 public class ItemSolderingIron extends ItemForestry implements ISolderingIron {
@@ -283,7 +282,7 @@ public class ItemSolderingIron extends ItemForestry implements ISolderingIron {
 
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			entityplayer.openGui(ForestryAPI.instance, GuiId.SolderingIronGUI.ordinal(), world, (int) entityplayer.posX, (int) entityplayer.posY,
 					(int) entityplayer.posZ);
 		}
diff --git a/src/main/java/forestry/core/genetics/ItemResearchNote.java b/src/main/java/forestry/core/genetics/ItemResearchNote.java
index 116c3f070..deb3f408e 100755
--- a/src/main/java/forestry/core/genetics/ItemResearchNote.java
+++ b/src/main/java/forestry/core/genetics/ItemResearchNote.java
@@ -282,7 +282,7 @@ public class ItemResearchNote extends ItemForestry {
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return itemstack;
 		}
 
diff --git a/src/main/java/forestry/core/gui/ContainerAlyzer.java b/src/main/java/forestry/core/gui/ContainerAlyzer.java
index 9b20cb65b..b96d9521d 100644
--- a/src/main/java/forestry/core/gui/ContainerAlyzer.java
+++ b/src/main/java/forestry/core/gui/ContainerAlyzer.java
@@ -31,7 +31,7 @@ public class ContainerAlyzer extends ContainerItemInventory<ItemAlyzer.AlyzerInv
 	@Override
 	public void onContainerClosed(EntityPlayer entityplayer) {
 
-		if (!Proxies.common.isSimulating(entityplayer.worldObj)) {
+		if (entityplayer.worldObj.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/core/items/ItemAssemblyKit.java b/src/main/java/forestry/core/items/ItemAssemblyKit.java
index 3208cfc01..3f5f9bbec 100755
--- a/src/main/java/forestry/core/items/ItemAssemblyKit.java
+++ b/src/main/java/forestry/core/items/ItemAssemblyKit.java
@@ -16,8 +16,6 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.util.MathHelper;
 import net.minecraft.world.World;
 
-import forestry.core.proxy.Proxies;
-
 public class ItemAssemblyKit extends ItemForestry {
 	private final ItemStack assembled;
 	private final boolean motionOnOpen;
@@ -35,7 +33,7 @@ public class ItemAssemblyKit extends ItemForestry {
 
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			itemstack.stackSize--;
 			EntityItem entity = new EntityItem(world, entityplayer.posX, entityplayer.posY, entityplayer.posZ, assembled.copy());
 
diff --git a/src/main/java/forestry/core/items/ItemCrated.java b/src/main/java/forestry/core/items/ItemCrated.java
index 133fde17b..b93b2546f 100755
--- a/src/main/java/forestry/core/items/ItemCrated.java
+++ b/src/main/java/forestry/core/items/ItemCrated.java
@@ -47,7 +47,7 @@ public class ItemCrated extends Item {
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
 
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			if (contained == null || itemstack.stackSize == 0) {
 				return itemstack;
 			}
diff --git a/src/main/java/forestry/core/items/ItemForestry.java b/src/main/java/forestry/core/items/ItemForestry.java
index 45306d8d5..0e67ca5b9 100755
--- a/src/main/java/forestry/core/items/ItemForestry.java
+++ b/src/main/java/forestry/core/items/ItemForestry.java
@@ -21,7 +21,6 @@ import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 
 import forestry.core.CreativeTabForestry;
-import forestry.core.proxy.Proxies;
 import forestry.core.render.TextureManager;
 import forestry.core.utils.StringUtil;
 
@@ -42,7 +41,7 @@ public class ItemForestry extends Item {
 	public boolean onItemUse(ItemStack itemstack, EntityPlayer player, World world, int x, int y, int z, int par7, float par8, float par9, float par10) {
 		if (isBonemeal) {
 			if (ItemDye.applyBonemeal(itemstack, world, x, y, z, player)) {
-				if (Proxies.common.isSimulating(world)) {
+				if (!world.isRemote) {
 					world.playAuxSFX(2005, x, y, z, 0);
 				}
 
diff --git a/src/main/java/forestry/core/items/ItemForestryTool.java b/src/main/java/forestry/core/items/ItemForestryTool.java
index 4b908766b..b6f5272e7 100755
--- a/src/main/java/forestry/core/items/ItemForestryTool.java
+++ b/src/main/java/forestry/core/items/ItemForestryTool.java
@@ -24,8 +24,6 @@ import net.minecraftforge.event.entity.player.PlayerDestroyItemEvent;
 
 import cpw.mods.fml.common.eventhandler.SubscribeEvent;
 
-import forestry.core.proxy.Proxies;
-
 public abstract class ItemForestryTool extends ItemForestry {
 
 	private final ItemStack remnants;
@@ -63,7 +61,7 @@ public abstract class ItemForestryTool extends ItemForestry {
 			return;
 		}
 
-		if (Proxies.common.isSimulating(event.entityPlayer.worldObj) && remnants != null) {
+		if (!event.entityPlayer.worldObj.isRemote && remnants != null) {
 			EntityItem entity = new EntityItem(event.entityPlayer.worldObj, event.entityPlayer.posX, event.entityPlayer.posY, event.entityPlayer.posZ,
 					remnants.copy());
 			event.entityPlayer.worldObj.spawnEntityInWorld(entity);
diff --git a/src/main/java/forestry/core/items/ItemLiquidContainer.java b/src/main/java/forestry/core/items/ItemLiquidContainer.java
index ac5097bf7..832c4a4c4 100755
--- a/src/main/java/forestry/core/items/ItemLiquidContainer.java
+++ b/src/main/java/forestry/core/items/ItemLiquidContainer.java
@@ -138,7 +138,7 @@ public class ItemLiquidContainer extends Item {
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return itemstack;
 		}
 
diff --git a/src/main/java/forestry/core/proxy/ProxyCommon.java b/src/main/java/forestry/core/proxy/ProxyCommon.java
index e3f9a1354..8bf90c565 100755
--- a/src/main/java/forestry/core/proxy/ProxyCommon.java
+++ b/src/main/java/forestry/core/proxy/ProxyCommon.java
@@ -201,10 +201,6 @@ public class ProxyCommon {
 		return 4f;
 	}
 
-	public boolean isSimulating(World world) {
-		return true;
-	}
-
 	public boolean isShiftDown() {
 		return false;
 	}
@@ -259,7 +255,7 @@ public class ProxyCommon {
 
 	public void sendFXSignal(PacketFXSignal.VisualFXType visualFX, PacketFXSignal.SoundFXType soundFX, World world, int xCoord, int yCoord, int zCoord,
 			Block block, int i) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			Proxies.net.sendNetworkPacket(new PacketFXSignal(visualFX, soundFX, xCoord, yCoord, zCoord, block, i), world);
 		}
 	}
diff --git a/src/main/java/forestry/core/proxy/ProxyCommonClient.java b/src/main/java/forestry/core/proxy/ProxyCommonClient.java
index c7c34486c..05eff34f7 100644
--- a/src/main/java/forestry/core/proxy/ProxyCommonClient.java
+++ b/src/main/java/forestry/core/proxy/ProxyCommonClient.java
@@ -102,11 +102,6 @@ public class ProxyCommonClient extends ProxyCommon {
 		}
 	}
 
-	@Override
-	public boolean isSimulating(World world) {
-		return !world.isRemote;
-	}
-
 	@Override
 	public boolean isShiftDown() {
 		return Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) || Keyboard.isKeyDown(Keyboard.KEY_RSHIFT);
@@ -134,7 +129,7 @@ public class ProxyCommonClient extends ProxyCommon {
 
 	@Override
 	public void playSoundFX(World world, int x, int y, int z, Block block) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			super.playSoundFX(world, x, y, z, block);
 		} else {
 			playSoundFX(world, x, y, z, block.stepSound.getStepResourcePath(), block.stepSound.getVolume(), block.stepSound.getPitch());
@@ -143,7 +138,7 @@ public class ProxyCommonClient extends ProxyCommon {
 
 	@Override
 	public void playBlockBreakSoundFX(World world, int x, int y, int z, Block block) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			super.playSoundFX(world, x, y, z, block);
 		} else {
 			playSoundFX(world, x, y, z, block.stepSound.getBreakSound(), block.stepSound.getVolume() / 4, block.stepSound.getPitch());
@@ -152,7 +147,7 @@ public class ProxyCommonClient extends ProxyCommon {
 
 	@Override
 	public void playBlockPlaceSoundFX(World world, int x, int y, int z, Block block) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			super.playSoundFX(world, x, y, z, block);
 		} else {
 			playSoundFX(world, x, y, z, block.stepSound.getStepResourcePath(), block.stepSound.getVolume() / 4, block.stepSound.getPitch());
@@ -218,7 +213,7 @@ public class ProxyCommonClient extends ProxyCommon {
 
 	@Override
 	public void addBlockDestroyEffects(World world, int xCoord, int yCoord, int zCoord, Block block, int i) {
-		if (!isSimulating(world)) {
+		if (world.isRemote) {
 			getClientInstance().effectRenderer.addBlockDestroyEffects(xCoord, yCoord, zCoord, block, i);
 		} else {
 			super.addBlockDestroyEffects(world, xCoord, yCoord, zCoord, block, i);
@@ -227,7 +222,7 @@ public class ProxyCommonClient extends ProxyCommon {
 
 	@Override
 	public void addBlockPlaceEffects(World world, int xCoord, int yCoord, int zCoord, Block block, int i) {
-		if (!isSimulating(world)) {
+		if (world.isRemote) {
 			playBlockPlaceSoundFX(world, xCoord, yCoord, zCoord, block);
 		} else {
 			super.addBlockPlaceEffects(world, xCoord, yCoord, zCoord, block, i);
diff --git a/src/main/java/forestry/core/tiles/TileEscritoire.java b/src/main/java/forestry/core/tiles/TileEscritoire.java
index 766e7db56..bcf90e449 100644
--- a/src/main/java/forestry/core/tiles/TileEscritoire.java
+++ b/src/main/java/forestry/core/tiles/TileEscritoire.java
@@ -203,7 +203,7 @@ public class TileEscritoire extends TileBase implements ISidedInventory, IRender
 		@Override
 		public void setInventorySlotContents(int slotIndex, ItemStack itemstack) {
 			super.setInventorySlotContents(slotIndex, itemstack);
-			if (slotIndex == SLOT_ANALYZE && Proxies.common.isSimulating(tile.worldObj)) {
+			if (slotIndex == SLOT_ANALYZE && !tile.worldObj.isRemote) {
 				if (!AlleleManager.alleleRegistry.isIndividual(getStackInSlot(SLOT_ANALYZE)) && getStackInSlot(SLOT_ANALYZE) != null) {
 					ItemStack ersatz = GeneticsUtil.convertSaplingToGeneticEquivalent(getStackInSlot(SLOT_ANALYZE));
 					if (ersatz != null) {
diff --git a/src/main/java/forestry/core/tiles/TileForestry.java b/src/main/java/forestry/core/tiles/TileForestry.java
index 3203c1378..66286dafb 100644
--- a/src/main/java/forestry/core/tiles/TileForestry.java
+++ b/src/main/java/forestry/core/tiles/TileForestry.java
@@ -105,7 +105,7 @@ public abstract class TileForestry extends TileEntity implements IStreamable, IE
 	public final void updateEntity() {
 		tickCount++;
 
-		if (Proxies.common.isSimulating(worldObj)) {
+		if (!worldObj.isRemote) {
 			updateServerSide();
 		} else {
 			updateClientSide();
diff --git a/src/main/java/forestry/factory/tiles/TileMillRainmaker.java b/src/main/java/forestry/factory/tiles/TileMillRainmaker.java
index 1e80d04a9..65596a2af 100644
--- a/src/main/java/forestry/factory/tiles/TileMillRainmaker.java
+++ b/src/main/java/forestry/factory/tiles/TileMillRainmaker.java
@@ -32,7 +32,7 @@ public class TileMillRainmaker extends TileMill {
 
 	@Override
 	public void openGui(EntityPlayer player) {
-		if (!Proxies.common.isSimulating(player.worldObj)) {
+		if (player.worldObj.isRemote) {
 			return;
 		}
 
@@ -98,7 +98,7 @@ public class TileMillRainmaker extends TileMill {
 			Proxies.common.addEntityExplodeFX(worldObj, (f + f4), f1, (f2 + f3));
 		}
 
-		if (Proxies.common.isSimulating(worldObj)) {
+		if (!worldObj.isRemote) {
 			if (reverse) {
 				worldObj.getWorldInfo().setRaining(false);
 			} else {
diff --git a/src/main/java/forestry/factory/tiles/TileWorktable.java b/src/main/java/forestry/factory/tiles/TileWorktable.java
index 7b4d447fd..412685ae3 100644
--- a/src/main/java/forestry/factory/tiles/TileWorktable.java
+++ b/src/main/java/forestry/factory/tiles/TileWorktable.java
@@ -28,7 +28,6 @@ import forestry.core.inventory.wrappers.InventoryMapper;
 import forestry.core.network.DataInputStreamForestry;
 import forestry.core.network.DataOutputStreamForestry;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 import forestry.core.recipes.RecipeUtil;
 import forestry.core.tiles.TileBase;
 import forestry.core.utils.InventoryUtil;
@@ -208,7 +207,7 @@ public class TileWorktable extends TileBase implements ICrafterWorktable {
 			}
 		}
 		
-		if (Proxies.common.isSimulating(worldObj)) {
+		if (!worldObj.isRemote) {
 			memorized.memorizeRecipe(worldObj, currentRecipe, currentCrafting);
 		}
 
diff --git a/src/main/java/forestry/farming/EventHandlerFarming.java b/src/main/java/forestry/farming/EventHandlerFarming.java
index 38a046436..d7935ef7c 100755
--- a/src/main/java/forestry/farming/EventHandlerFarming.java
+++ b/src/main/java/forestry/farming/EventHandlerFarming.java
@@ -18,7 +18,6 @@ import cpw.mods.fml.common.eventhandler.Event.Result;
 import cpw.mods.fml.common.eventhandler.SubscribeEvent;
 
 import forestry.core.config.ForestryBlock;
-import forestry.core.proxy.Proxies;
 import forestry.farming.blocks.BlockMushroom;
 
 public class EventHandlerFarming {
@@ -26,7 +25,7 @@ public class EventHandlerFarming {
 	@SubscribeEvent
 	public void handleBonemeal(BonemealEvent event) {
 
-		if (!Proxies.common.isSimulating(event.world)) {
+		if (event.world.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/farming/blocks/BlockFarm.java b/src/main/java/forestry/farming/blocks/BlockFarm.java
index b46b5b759..b97b59af9 100644
--- a/src/main/java/forestry/farming/blocks/BlockFarm.java
+++ b/src/main/java/forestry/farming/blocks/BlockFarm.java
@@ -34,7 +34,6 @@ import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 
 import forestry.core.blocks.BlockStructure;
-import forestry.core.proxy.Proxies;
 import forestry.core.render.ParticleHelper;
 import forestry.core.utils.ItemStackUtil;
 import forestry.farming.render.EnumFarmBlockTexture;
@@ -98,7 +97,7 @@ public class BlockFarm extends BlockStructure {
 	@Override
 	public boolean removedByPlayer(World world, EntityPlayer player, int x, int y, int z) {
 		int meta = world.getBlockMetadata(x, y, z);
-		if (Proxies.common.isSimulating(world) && canHarvestBlock(player, meta)) {
+		if (!world.isRemote && canHarvestBlock(player, meta)) {
 			List<ItemStack> drops = getDrops(world, x, y, z, 0, 0);
 			for (ItemStack drop : drops) {
 				ItemStackUtil.dropItemStackAsEntity(drop, world, x, y, z);
diff --git a/src/main/java/forestry/farming/blocks/BlockMushroom.java b/src/main/java/forestry/farming/blocks/BlockMushroom.java
index 722b12524..b3f21c661 100644
--- a/src/main/java/forestry/farming/blocks/BlockMushroom.java
+++ b/src/main/java/forestry/farming/blocks/BlockMushroom.java
@@ -30,7 +30,6 @@ import cpw.mods.fml.relauncher.SideOnly;
 
 import forestry.core.blocks.IItemTyped;
 import forestry.core.config.Constants;
-import forestry.core.proxy.Proxies;
 import forestry.farming.worldgen.WorldGenBigMushroom;
 
 public class BlockMushroom extends BlockSapling implements IItemTyped {
@@ -76,7 +75,7 @@ public class BlockMushroom extends BlockSapling implements IItemTyped {
 	@Override
 	public void updateTick(World world, int i, int j, int k, Random random) {
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/food/gui/ContainerInfuser.java b/src/main/java/forestry/food/gui/ContainerInfuser.java
index f06eb22f6..d7d7e4a60 100755
--- a/src/main/java/forestry/food/gui/ContainerInfuser.java
+++ b/src/main/java/forestry/food/gui/ContainerInfuser.java
@@ -41,7 +41,7 @@ public class ContainerInfuser extends ContainerItemInventory<InfuserInventory> {
 	@Override
 	public void onContainerClosed(EntityPlayer entityplayer) {
 
-		if (!Proxies.common.isSimulating(entityplayer.worldObj)) {
+		if (entityplayer.worldObj.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/food/items/ItemBeverage.java b/src/main/java/forestry/food/items/ItemBeverage.java
index 089570da4..37717825c 100755
--- a/src/main/java/forestry/food/items/ItemBeverage.java
+++ b/src/main/java/forestry/food/items/ItemBeverage.java
@@ -32,7 +32,6 @@ import forestry.api.food.BeverageManager;
 import forestry.api.food.IBeverageEffect;
 import forestry.core.config.Config;
 import forestry.core.items.ItemForestryFood;
-import forestry.core.proxy.Proxies;
 import forestry.core.render.TextureManager;
 
 public class ItemBeverage extends ItemForestryFood {
@@ -142,7 +141,7 @@ public class ItemBeverage extends ItemForestryFood {
 		entityplayer.getFoodStats().func_151686_a(this, itemstack);
 		world.playSoundAtEntity(entityplayer, "random.burp", 0.5F, world.rand.nextFloat() * 0.1F + 0.9F);
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return itemstack;
 		}
 
diff --git a/src/main/java/forestry/food/items/ItemInfuser.java b/src/main/java/forestry/food/items/ItemInfuser.java
index 47456c3d6..d6009abf5 100755
--- a/src/main/java/forestry/food/items/ItemInfuser.java
+++ b/src/main/java/forestry/food/items/ItemInfuser.java
@@ -28,7 +28,6 @@ import forestry.core.config.ForestryItem;
 import forestry.core.inventory.ItemInventory;
 import forestry.core.items.ItemForestry;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 import forestry.food.BeverageEffect;
 import forestry.plugins.PluginManager;
 
@@ -334,7 +333,7 @@ public class ItemInfuser extends ItemForestry {
 
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			entityplayer.openGui(ForestryAPI.instance, GuiId.InfuserGUI.ordinal(), world, (int) entityplayer.posX, (int) entityplayer.posY,
 					(int) entityplayer.posZ);
 		}
diff --git a/src/main/java/forestry/lepidopterology/entities/EntityButterfly.java b/src/main/java/forestry/lepidopterology/entities/EntityButterfly.java
index 460bf8cb0..37c238a8d 100755
--- a/src/main/java/forestry/lepidopterology/entities/EntityButterfly.java
+++ b/src/main/java/forestry/lepidopterology/entities/EntityButterfly.java
@@ -44,7 +44,6 @@ import forestry.api.lepidopterology.EnumFlutterType;
 import forestry.api.lepidopterology.IAlleleButterflySpecies;
 import forestry.api.lepidopterology.IButterfly;
 import forestry.api.lepidopterology.IEntityButterfly;
-import forestry.core.proxy.Proxies;
 import forestry.core.utils.ItemStackUtil;
 import forestry.lepidopterology.genetics.Butterfly;
 import forestry.lepidopterology.render.RenderButterflyItem;
@@ -333,7 +332,7 @@ public class EntityButterfly extends EntityCreature implements IEntityButterfly
 
 	@Override
 	public IEntityLivingData onSpawnWithEgg(IEntityLivingData data) {
-		if (Proxies.common.isSimulating(worldObj)) {
+		if (!worldObj.isRemote) {
 			setIndividual(contained);
 		}
 		return data;
@@ -407,7 +406,7 @@ public class EntityButterfly extends EntityCreature implements IEntityButterfly
 			return false;
 		}
 
-		if (Proxies.common.isSimulating(worldObj)) {
+		if (!worldObj.isRemote) {
 			contained.getGenome().getPrimary().getRoot().getBreedingTracker(worldObj, player.getGameProfile()).registerCatch(contained);
 			ItemStackUtil.dropItemStackAsEntity(PluginLepidopterology.butterflyInterface.getMemberStack(contained.copy(), EnumFlutterType.BUTTERFLY.ordinal()), worldObj, posX, posY, posZ);
 			setDead();
@@ -436,7 +435,7 @@ public class EntityButterfly extends EntityCreature implements IEntityButterfly
 		super.onUpdate();
 
 		// Update stuff client side
-		if (!Proxies.common.isSimulating(worldObj)) {
+		if (worldObj.isRemote) {
 			if (species == null || dataWatcher.hasChanges()) {
 				scale = (float) dataWatcher.getWatchableObjectInt(DATAWATCHER_ID_SCALE) / 100;
 				String uid = dataWatcher.getWatchableObjectString(DATAWATCHER_ID_SPECIES);
diff --git a/src/main/java/forestry/lepidopterology/items/ItemButterflyGE.java b/src/main/java/forestry/lepidopterology/items/ItemButterflyGE.java
index 6713298eb..cadf22505 100755
--- a/src/main/java/forestry/lepidopterology/items/ItemButterflyGE.java
+++ b/src/main/java/forestry/lepidopterology/items/ItemButterflyGE.java
@@ -113,7 +113,7 @@ public class ItemButterflyGE extends ItemGE {
 		if (type != EnumFlutterType.BUTTERFLY) {
 			return false;
 		}
-		if (!Proxies.common.isSimulating(entityItem.worldObj) || entityItem.ticksExisted < 80) {
+		if (entityItem.worldObj.isRemote || entityItem.ticksExisted < 80) {
 			return false;
 		}
 		if (rand.nextInt(24) != 0) {
@@ -207,7 +207,7 @@ public class ItemButterflyGE extends ItemGE {
 	@Override
 	public boolean onItemUse(ItemStack itemstack, EntityPlayer player, World world, int x, int y, int z, int par7, float facingX, float facingY, float facingZ) {
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return false;
 		}
 
diff --git a/src/main/java/forestry/lepidopterology/items/ItemFlutterlyzer.java b/src/main/java/forestry/lepidopterology/items/ItemFlutterlyzer.java
index 0b1628626..ec4a421d1 100755
--- a/src/main/java/forestry/lepidopterology/items/ItemFlutterlyzer.java
+++ b/src/main/java/forestry/lepidopterology/items/ItemFlutterlyzer.java
@@ -22,7 +22,6 @@ import forestry.core.config.Config;
 import forestry.core.gui.IHintSource;
 import forestry.core.items.ItemAlyzer;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 import forestry.plugins.PluginLepidopterology;
 
 public class ItemFlutterlyzer extends ItemAlyzer {
@@ -96,7 +95,7 @@ public class ItemFlutterlyzer extends ItemAlyzer {
 
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			entityplayer.openGui(ForestryAPI.instance, GuiId.FlutterlyzerGUI.ordinal(), world, (int) entityplayer.posX, (int) entityplayer.posY,
 					(int) entityplayer.posZ);
 		}
diff --git a/src/main/java/forestry/mail/gui/ContainerCatalogue.java b/src/main/java/forestry/mail/gui/ContainerCatalogue.java
index cd5f53e91..07f3b3ead 100755
--- a/src/main/java/forestry/mail/gui/ContainerCatalogue.java
+++ b/src/main/java/forestry/mail/gui/ContainerCatalogue.java
@@ -67,7 +67,7 @@ public class ContainerCatalogue extends Container implements IGuiSelectable {
 	public ContainerCatalogue(EntityPlayer player) {
 		this.player = player;
 
-		if (Proxies.common.isSimulating(player.worldObj)) {
+		if (!player.worldObj.isRemote) {
 			rebuildStationsList();
 		}
 	}
@@ -104,7 +104,7 @@ public class ContainerCatalogue extends Container implements IGuiSelectable {
 	}
 
 	public void nextPage() {
-		if (!Proxies.common.isSimulating(player.worldObj)) {
+		if (player.worldObj.isRemote) {
 			sendSelection(true);
 			return;
 		}
@@ -117,7 +117,7 @@ public class ContainerCatalogue extends Container implements IGuiSelectable {
 	}
 
 	public void previousPage() {
-		if (!Proxies.common.isSimulating(player.worldObj)) {
+		if (player.worldObj.isRemote) {
 			sendSelection(false);
 			return;
 		}
@@ -130,7 +130,7 @@ public class ContainerCatalogue extends Container implements IGuiSelectable {
 	}
 
 	public void cycleFilter() {
-		if (!Proxies.common.isSimulating(player.worldObj)) {
+		if (player.worldObj.isRemote) {
 			PacketGuiSelect packet = new PacketGuiSelect(PacketId.GUI_SELECTION_CHANGE, 2, 0);
 			Proxies.net.sendToServer(packet);
 			return;
@@ -150,7 +150,7 @@ public class ContainerCatalogue extends Container implements IGuiSelectable {
 	/* Managing Trade info */
 	private void updateTradeInfo() {
 		// Updating is done by the server.
-		if (!Proxies.common.isSimulating(player.worldObj)) {
+		if (player.worldObj.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/mail/gui/ContainerLetter.java b/src/main/java/forestry/mail/gui/ContainerLetter.java
index 31d13afec..1dccb3f0a 100755
--- a/src/main/java/forestry/mail/gui/ContainerLetter.java
+++ b/src/main/java/forestry/mail/gui/ContainerLetter.java
@@ -59,7 +59,7 @@ public class ContainerLetter extends ContainerItemInventory<LetterInventory> {
 		}
 
 		// Rip open delivered mails
-		if (Proxies.common.isSimulating(player.worldObj)) {
+		if (!player.worldObj.isRemote) {
 			if (inventory.getLetter().isProcessed()) {
 				inventory.onLetterOpened();
 			}
@@ -78,7 +78,7 @@ public class ContainerLetter extends ContainerItemInventory<LetterInventory> {
 	@Override
 	public void onContainerClosed(EntityPlayer entityplayer) {
 
-		if (Proxies.common.isSimulating(entityplayer.worldObj)) {
+		if (!entityplayer.worldObj.isRemote) {
 			ILetter letter = inventory.getLetter();
 			if (!letter.isProcessed()) {
 				IMailAddress sender = PostManager.postRegistry.getMailAddress(entityplayer.getGameProfile());
@@ -183,7 +183,7 @@ public class ContainerLetter extends ContainerItemInventory<LetterInventory> {
 	/* Managing Trade info */
 	private void updateTradeInfo(World world, IMailAddress address) {
 		// Updating is done by the server.
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return;
 		}
 
diff --git a/src/main/java/forestry/mail/gui/ContainerMailbox.java b/src/main/java/forestry/mail/gui/ContainerMailbox.java
index 7a7ac8ce2..310d5abb4 100755
--- a/src/main/java/forestry/mail/gui/ContainerMailbox.java
+++ b/src/main/java/forestry/mail/gui/ContainerMailbox.java
@@ -53,7 +53,7 @@ public class ContainerMailbox extends ContainerTile<TileMailbox> {
 		ItemStack stack = super.slotClick(slotIndex, button, par3, player);
 
 		if (SlotUtil.isSlotInRange(slotIndex, SLOT_LETTERS, SLOT_LETTERS_COUNT)) {
-			if (Proxies.common.isSimulating(player.worldObj) && mailInventory != null) {
+			if (!player.worldObj.isRemote && mailInventory != null) {
 				POBoxInfo info = mailInventory.getPOBoxInfo();
 				Proxies.net.sendToPlayer(new PacketPOBoxInfo(info), player);
 			}
diff --git a/src/main/java/forestry/mail/items/ItemCatalogue.java b/src/main/java/forestry/mail/items/ItemCatalogue.java
index c6491939b..064411f4f 100755
--- a/src/main/java/forestry/mail/items/ItemCatalogue.java
+++ b/src/main/java/forestry/mail/items/ItemCatalogue.java
@@ -17,7 +17,6 @@ import net.minecraft.world.World;
 import forestry.api.core.ForestryAPI;
 import forestry.core.items.ItemForestry;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 
 public class ItemCatalogue extends ItemForestry {
 
@@ -28,7 +27,7 @@ public class ItemCatalogue extends ItemForestry {
 
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			entityplayer.openGui(ForestryAPI.instance, GuiId.CatalogueGUI.ordinal(), world, (int) entityplayer.posX, (int) entityplayer.posY,
 					(int) entityplayer.posZ);
 		}
diff --git a/src/main/java/forestry/mail/items/ItemLetter.java b/src/main/java/forestry/mail/items/ItemLetter.java
index 6bf2423e5..528bd9ec7 100755
--- a/src/main/java/forestry/mail/items/ItemLetter.java
+++ b/src/main/java/forestry/mail/items/ItemLetter.java
@@ -37,7 +37,6 @@ import forestry.core.gui.IHintSource;
 import forestry.core.inventory.ItemInventory;
 import forestry.core.items.ItemInventoried;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 import forestry.core.render.TextureManager;
 import forestry.core.utils.SlotUtil;
 import forestry.core.utils.StringUtil;
@@ -61,7 +60,7 @@ public class ItemLetter extends ItemInventoried {
 
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer entityplayer) {
-		if (Proxies.common.isSimulating(world)) {
+		if (!world.isRemote) {
 			if (itemstack.stackSize == 1) {
 				entityplayer.openGui(ForestryAPI.instance, GuiId.LetterGUI.ordinal(), world, (int) entityplayer.posX, (int) entityplayer.posY, (int) entityplayer.posZ);
 			} else {
diff --git a/src/main/java/forestry/mail/tiles/TileMailbox.java b/src/main/java/forestry/mail/tiles/TileMailbox.java
index 7566ac19e..f7d11a0f7 100644
--- a/src/main/java/forestry/mail/tiles/TileMailbox.java
+++ b/src/main/java/forestry/mail/tiles/TileMailbox.java
@@ -34,7 +34,6 @@ import forestry.api.mail.PostManager;
 import forestry.core.config.Config;
 import forestry.core.inventory.InventoryAdapter;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 import forestry.core.tiles.TileBase;
 import forestry.mail.EnumDeliveryState;
 import forestry.mail.POBox;
@@ -56,7 +55,7 @@ public class TileMailbox extends TileBase implements IMailContainer {
 	@Override
 	public void openGui(EntityPlayer player) {
 
-		if (!Proxies.common.isSimulating(worldObj)) {
+		if (worldObj.isRemote) {
 			return;
 		}
 
@@ -86,7 +85,7 @@ public class TileMailbox extends TileBase implements IMailContainer {
 
 	/* MAIL HANDLING */
 	public IInventory getOrCreateMailInventory(World world, GameProfile playerProfile) {
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return getInternalInventory();
 		}
 
diff --git a/src/main/java/forestry/mail/tiles/TileTrader.java b/src/main/java/forestry/mail/tiles/TileTrader.java
index fbcd0bc8f..ad6a1d854 100644
--- a/src/main/java/forestry/mail/tiles/TileTrader.java
+++ b/src/main/java/forestry/mail/tiles/TileTrader.java
@@ -280,7 +280,7 @@ public class TileTrader extends TileBase {
 			return;
 		}
 
-		if (Proxies.common.isSimulating(worldObj)) {
+		if (!worldObj.isRemote) {
 			IErrorLogic errorLogic = getErrorLogic();
 
 			boolean hasValidTradeAddress = PostManager.postRegistry.isValidTradeAddress(worldObj, address);
@@ -301,7 +301,7 @@ public class TileTrader extends TileBase {
 	@Override
 	public IInventoryAdapter getInternalInventory() {
 		// Handle client side
-		if (!Proxies.common.isSimulating(worldObj) || !address.isValid()) {
+		if (worldObj.isRemote || !address.isValid()) {
 			return super.getInternalInventory();
 		}
 
diff --git a/src/main/java/forestry/storage/items/ItemBackpack.java b/src/main/java/forestry/storage/items/ItemBackpack.java
index e34486cd8..3c70f2c3b 100755
--- a/src/main/java/forestry/storage/items/ItemBackpack.java
+++ b/src/main/java/forestry/storage/items/ItemBackpack.java
@@ -40,7 +40,6 @@ import forestry.core.inventory.wrappers.IInvSlot;
 import forestry.core.inventory.wrappers.InventoryIterator;
 import forestry.core.items.ItemInventoried;
 import forestry.core.network.GuiId;
-import forestry.core.proxy.Proxies;
 import forestry.core.render.TextureManager;
 import forestry.core.tiles.TileUtil;
 import forestry.core.utils.InventoryUtil;
@@ -75,7 +74,7 @@ public class ItemBackpack extends ItemInventoried {
 	@Override
 	public ItemStack onItemRightClick(ItemStack itemstack, World world, EntityPlayer player) {
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return itemstack;
 		}
 
@@ -96,7 +95,7 @@ public class ItemBackpack extends ItemInventoried {
 	@Override
 	public boolean onItemUseFirst(ItemStack itemstack, EntityPlayer player, World world, int x, int y, int z, int side, float hitX, float hitY, float hitZ) {
 
-		if (!Proxies.common.isSimulating(world)) {
+		if (world.isRemote) {
 			return false;
 		}